Chapter 2 — Wiring and Protection›Article 230 — SERVICES
San Francisco Building Inspection Commission Codes § 230.43 Wiring Methods for 1000 Volts, Nominal, or Less
San Francisco Building Inspection Commission Codes · 2026-08 edition · updated 2026-10-23 · San Francisco
Cite as: San Francisco Building Inspection Commission Codes § 230.43 · Text as of 2026-10-23
(A) Acceptable Wiring Methods. Service-entrance conductors shall be installed in accordance with the applicable requirements of this Code covering the type of wiring method used and shall be limited to the following methods:
(1) [
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(2) [
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(3) Rigid metal conduit (RMC)
(4) Intermediate metal conduit (IMC)
(5) [
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(6) [ The arrow represents the location of language that has been deleted by San Francisco from the applicable California Code.
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(7) [ The arrow represents the location of language that has been deleted by San Francisco from the applicable California Code.
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(8) [
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(9) Busways
(10) Auxiliary gutters
(11) Rigid polyvinyl chloride conduit (PVC)
(12) [
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(13) [ The arrow represents the location of language that has been deleted by San Francisco from the applicable California Code.
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(14) Mineral-insulated, metal sheathed cable, Type MI
(15) [
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(16) [
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- (17) High density polyethylene conduit (HDPE)
(18) Non-metallic underground conduit with conductors (NUCC)
(19) Reinforced thermosetting resin conduit (RTRC)
(20) [
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(21) [ The arrow represents the location of language that has been deleted by San Francisco from the applicable California Code.
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(B) Raceway Size. Minimum raceway size shall comply with the following:
(1) Except as provided in Section 230.43(B)(2) and (3) the minimum size raceway installed for service entrance conductor shall be 1-1/4 inch (31.8 mm).
(2) Raceways for service entrance conductors for sign or billboard lighting shall not be smaller than 3/4 inch (19.1 mm) conduit.
(3) Installations consisting of not more than two 2-wire branch circuits may be supplied by No. 8 conductors in 3/4 inch (19.1 mm) conduit.
Exception: New service entrance conductors may be re-pulled in previously approved service raceways, provided the installation complies with the requirements of SFEC Section 89.116 and Chapters 1, 2 and 3.
Informational Note: Refer to electric utility service requirements for raceway sizes.
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